39564939 has 8 divisors (see below), whose sum is σ = 52782912. Its totient is φ = 26361800.

The previous prime is 39564923. The next prime is 39564983. The reversal of 39564939 is 93946593.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39564939 - 2⁴ = 39564923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39564919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6664 + ... + 11114.

It is an arithmetic number, because the mean of its divisors is an integer number (6597864).

Almost surely, 2^39564939 is an apocalyptic number.

39564939 is a deficient number, since it is larger than the sum of its proper divisors (13217973).

39564939 is a wasteful number, since it uses less digits than its factorization.

39564939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7417.

The product of its digits is 787320, while the sum is 48.

The square root of 39564939 is about 6290.0666928102. The cubic root of 39564939 is about 340.7507602740.

The spelling of 39564939 in words is "thirty-nine million, five hundred sixty-four thousand, nine hundred thirty-nine".